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Tue, 31 Mar 2026 07:16:44 -0700 (PDT) X-Received: by 2002:a05:622a:5e16:b0:50b:51a0:f744 with SMTP id d75a77b69052e-50ba3816a05mr227957191cf.17.1774966603971; Tue, 31 Mar 2026 07:16:43 -0700 (PDT) Received: from redhat.com ([96.66.166.93]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-50bb2c67fefsm86643111cf.4.2026.03.31.07.16.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 Mar 2026 07:16:43 -0700 (PDT) Date: Tue, 31 Mar 2026 10:16:41 -0400 From: Brian Masney To: Troy Mitchell Cc: Vinod Koul , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Guodong Xu , Michael Turquette , Stephen Boyd , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org Subject: Re: [PATCH v3 4/5] clk: spacemit: k3: mark top_dclk as CLK_IS_CRITICAL Message-ID: References: <20260331-k3-pdma-v3-0-a4e60dd8b4b3@linux.spacemit.com> <20260331-k3-pdma-v3-4-a4e60dd8b4b3@linux.spacemit.com> MIME-Version: 1.0 In-Reply-To: <20260331-k3-pdma-v3-4-a4e60dd8b4b3@linux.spacemit.com> User-Agent: Mutt/2.3.0 (2026-01-25) X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: 0m8NnaFruevur5XsJ8UaLjpQ1YSigYMhN7YjuPaEcQQ_1774966604 X-Mimecast-Originator: redhat.com Content-Disposition: inline X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260331_071651_620473_FE61BA21 X-CRM114-Status: UNSURE ( 9.17 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Tue, Mar 31, 2026 at 04:27:07PM +0800, Troy Mitchell wrote: > top_dclk is the DDR bus clock. If it is gated by clk_disable_unused, > all memory-mapped bus transactions cease to function, causing DMA > engines to hang and general system instability. > > Mark it CLK_IS_CRITICAL so the CCF never gates it during the > unused clock sweep. > > Fixes: e371a77255b8 ("clk: spacemit: k3: add the clock tree") > Signed-off-by: Troy Mitchell Reviewed-by: Brian Masney _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv